chrome.runtime.onMessage.addListener(
    function (request, sender, sendResponse) {
        console.log(sender.tab ?
            "from a content script:" + sender.tab.url :
            "from the extension");
        var name = document.getElementsByTagName("em")[0].innerText.trim()
        console.log("name:" + name)
        if (request.action === "GetSCPUserName") {
            sendResponse({name});
        }
        return true;
    }
)